Since this STB says"> Built-in tuners for both satellite TV (DVB-S/DVB-S2) and terrestrial TV (DVB-T) "; here's what I found:
From Wikipedia, the free encyclopedia
DVB-S is the original
Digital Video Broadcasting forward error coding and modulation standard for
satellite television and dates from 1995. It is used via satellites serving every continent of the world. DVB-S is used in both
MCPC and
SCPC modes for
broadcast network feeds, as well as for
direct broadcast satellite services like Sky TV (UK) via
Astra in Europe,
Dish Network in the
U.S., and
Bell ExpressVu in
Canada. The
transport stream delivered by DVB-S is mandated as MPEG-2.
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edit]
DVB-S2
One of the first DVB-S2 tuner cards.
DVB-S2 is an improved and updated specification to replace the DVB-S standard, ratified by
ETSI in
March 2005. Today the main use for this new standard is the distribution of
HDTV, while the original standard was mainly applied to
SDTV services. The development of DVB-S2 coincided with the introduction of
HDTV and
H.264 (
MPEG-4)
video codecs.
The authors claim that the DVB-S2 performance gain over DVB-S is around 30%, when the addition of improvements in the
video compression are added, a (
MPEG-4)
HDTV service can now be delivered in the same capacity that supported an early DVB-S-MPEG-2 SDTV service, only a decade before.